Finding the Third Proportional to 530,640 and 748,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   530,640 : 748,435.50 = 748,435.50 : x
2. Step 2: Convert to fraction form
   530,640/748,435.50 = 748,435.50/x
3. Step 3: Cross multiply
   530,640x = 748,435.50 × 748,435.50
4. Step 4: Simplify right side
   530,640x = 560,155,697,660.25
5. Step 5: Solve for x
   x = 560,155,697,660.25/530,640
6. Step 6: Final answer
   x = 1,055,622.83