Finding the Third Proportional to 458,865 and 645,035.06

Step by Step Solution

1. Step 1: Write the proportion equation
   458,865 : 645,035.06 = 645,035.06 : x
2. Step 2: Convert to fraction form
   458,865/645,035.06 = 645,035.06/x
3. Step 3: Cross multiply
   458,865x = 645,035.06 × 645,035.06
4. Step 4: Simplify right side
   458,865x = 416,070,231,854.38
5. Step 5: Solve for x
   x = 416,070,231,854.38/458,865
6. Step 6: Final answer
   x = 906,737.78