Finding the Third Proportional to 31,490,450,447.50 and 69,399,657,766.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,490,450,447.50 : 69,399,657,766.50 = 69,399,657,766.50 : x
2. Step 2: Convert to fraction form
   31,490,450,447.50/69,399,657,766.50 = 69,399,657,766.50/x
3. Step 3: Cross multiply
   31,490,450,447.50x = 69,399,657,766.50 × 69,399,657,766.50
4. Step 4: Simplify right side
   31,490,450,447.50x = 4,816,312,498,107,323,514,880
5. Step 5: Solve for x
   x = 4,816,312,498,107,323,514,880/31,490,450,447.50
6. Step 6: Final answer
   x = 152,945,176,384.09