Finding the Third Proportional to 521,586 and 744,468.75

Step by Step Solution

1. Step 1: Write the proportion equation
   521,586 : 744,468.75 = 744,468.75 : x
2. Step 2: Convert to fraction form
   521,586/744,468.75 = 744,468.75/x
3. Step 3: Cross multiply
   521,586x = 744,468.75 × 744,468.75
4. Step 4: Simplify right side
   521,586x = 554,233,719,726.56
5. Step 5: Solve for x
   x = 554,233,719,726.56/521,586
6. Step 6: Final answer
   x = 1,062,593.17