Finding the Third Proportional to 724,140 and 1,012,872

Step by Step Solution

1. Step 1: Write the proportion equation
   724,140 : 1,012,872 = 1,012,872 : x
2. Step 2: Convert to fraction form
   724,140/1,012,872 = 1,012,872/x
3. Step 3: Cross multiply
   724,140x = 1,012,872 × 1,012,872
4. Step 4: Simplify right side
   724,140x = 1,025,909,688,384
5. Step 5: Solve for x
   x = 1,025,909,688,384/724,140
6. Step 6: Final answer
   x = 1,416,728.38