Finding the Third Proportional to 563,845.50 and 872,687

Step by Step Solution

1. Step 1: Write the proportion equation
   563,845.50 : 872,687 = 872,687 : x
2. Step 2: Convert to fraction form
   563,845.50/872,687 = 872,687/x
3. Step 3: Cross multiply
   563,845.50x = 872,687 × 872,687
4. Step 4: Simplify right side
   563,845.50x = 761,582,599,969
5. Step 5: Solve for x
   x = 761,582,599,969/563,845.50
6. Step 6: Final answer
   x = 1,350,693.76