Finding the Third Proportional to 119,499,570 and 257,159,499

Step by Step Solution

1. Step 1: Write the proportion equation
   119,499,570 : 257,159,499 = 257,159,499 : x
2. Step 2: Convert to fraction form
   119,499,570/257,159,499 = 257,159,499/x
3. Step 3: Cross multiply
   119,499,570x = 257,159,499 × 257,159,499
4. Step 4: Simplify right side
   119,499,570x = 66,131,007,925,931,000
5. Step 5: Solve for x
   x = 66,131,007,925,931,000/119,499,570
6. Step 6: Final answer
   x = 553,399,547.18