Finding the Third Proportional to 67,257,772.50 and 139,883,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,257,772.50 : 139,883,401.50 = 139,883,401.50 : x
2. Step 2: Convert to fraction form
   67,257,772.50/139,883,401.50 = 139,883,401.50/x
3. Step 3: Cross multiply
   67,257,772.50x = 139,883,401.50 × 139,883,401.50
4. Step 4: Simplify right side
   67,257,772.50x = 19,567,366,015,210,204
5. Step 5: Solve for x
   x = 19,567,366,015,210,204/67,257,772.50
6. Step 6: Final answer
   x = 290,930,925.72