Finding the Third Proportional to 151,728,619.50 and 328,966,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,728,619.50 : 328,966,402.50 = 328,966,402.50 : x
2. Step 2: Convert to fraction form
   151,728,619.50/328,966,402.50 = 328,966,402.50/x
3. Step 3: Cross multiply
   151,728,619.50x = 328,966,402.50 × 328,966,402.50
4. Step 4: Simplify right side
   151,728,619.50x = 108,218,893,973,792,000
5. Step 5: Solve for x
   x = 108,218,893,973,792,000/151,728,619.50
6. Step 6: Final answer
   x = 713,239,824.70