Finding the Third Proportional to 31,948,947 and 69,979,369.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,948,947 : 69,979,369.50 = 69,979,369.50 : x
2. Step 2: Convert to fraction form
   31,948,947/69,979,369.50 = 69,979,369.50/x
3. Step 3: Cross multiply
   31,948,947x = 69,979,369.50 × 69,979,369.50
4. Step 4: Simplify right side
   31,948,947x = 4,897,112,155,617,530
5. Step 5: Solve for x
   x = 4,897,112,155,617,530/31,948,947
6. Step 6: Final answer
   x = 153,279,297.61