Finding the Third Proportional to 623,959 and 912,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   623,959 : 912,538.50 = 912,538.50 : x
2. Step 2: Convert to fraction form
   623,959/912,538.50 = 912,538.50/x
3. Step 3: Cross multiply
   623,959x = 912,538.50 × 912,538.50
4. Step 4: Simplify right side
   623,959x = 832,726,513,982.25
5. Step 5: Solve for x
   x = 832,726,513,982.25/623,959
6. Step 6: Final answer
   x = 1,334,585.31