Finding the Third Proportional to 718,413 and 1,071,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   718,413 : 1,071,391.50 = 1,071,391.50 : x
2. Step 2: Convert to fraction form
   718,413/1,071,391.50 = 1,071,391.50/x
3. Step 3: Cross multiply
   718,413x = 1,071,391.50 × 1,071,391.50
4. Step 4: Simplify right side
   718,413x = 1,147,879,746,272.25
5. Step 5: Solve for x
   x = 1,147,879,746,272.25/718,413
6. Step 6: Final answer
   x = 1,597,799.24