Finding the Third Proportional to 647,352 and 990,735.75

Step by Step Solution

1. Step 1: Write the proportion equation
   647,352 : 990,735.75 = 990,735.75 : x
2. Step 2: Convert to fraction form
   647,352/990,735.75 = 990,735.75/x
3. Step 3: Cross multiply
   647,352x = 990,735.75 × 990,735.75
4. Step 4: Simplify right side
   647,352x = 981,557,326,328.06
5. Step 5: Solve for x
   x = 981,557,326,328.06/647,352
6. Step 6: Final answer
   x = 1,516,265.23