Finding the Third Proportional to 645,989,448.38 and 1,002,200,434.88

Step by Step Solution

1. Step 1: Write the proportion equation
   645,989,448.38 : 1,002,200,434.88 = 1,002,200,434.88 : x
2. Step 2: Convert to fraction form
   645,989,448.38/1,002,200,434.88 = 1,002,200,434.88/x
3. Step 3: Cross multiply
   645,989,448.38x = 1,002,200,434.88 × 1,002,200,434.88
4. Step 4: Simplify right side
   645,989,448.38x = 1,004,405,711,663,639,168
5. Step 5: Solve for x
   x = 1,004,405,711,663,639,168/645,989,448.38
6. Step 6: Final answer
   x = 1,554,832,999.50