Finding the Third Proportional to 712,959 and 1,087,396

Step by Step Solution

1. Step 1: Write the proportion equation
   712,959 : 1,087,396 = 1,087,396 : x
2. Step 2: Convert to fraction form
   712,959/1,087,396 = 1,087,396/x
3. Step 3: Cross multiply
   712,959x = 1,087,396 × 1,087,396
4. Step 4: Simplify right side
   712,959x = 1,182,430,060,816
5. Step 5: Solve for x
   x = 1,182,430,060,816/712,959
6. Step 6: Final answer
   x = 1,658,482.55