Finding the Third Proportional to 172,287,088.50 and 378,049,492.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,287,088.50 : 378,049,492.50 = 378,049,492.50 : x
2. Step 2: Convert to fraction form
   172,287,088.50/378,049,492.50 = 378,049,492.50/x
3. Step 3: Cross multiply
   172,287,088.50x = 378,049,492.50 × 378,049,492.50
4. Step 4: Simplify right side
   172,287,088.50x = 142,921,418,779,507,552
5. Step 5: Solve for x
   x = 142,921,418,779,507,552/172,287,088.50
6. Step 6: Final answer
   x = 829,553,857.02