Finding the Third Proportional to 648,016 and 872,354

Step by Step Solution

1. Step 1: Write the proportion equation
   648,016 : 872,354 = 872,354 : x
2. Step 2: Convert to fraction form
   648,016/872,354 = 872,354/x
3. Step 3: Cross multiply
   648,016x = 872,354 × 872,354
4. Step 4: Simplify right side
   648,016x = 761,001,501,316
5. Step 5: Solve for x
   x = 761,001,501,316/648,016
6. Step 6: Final answer
   x = 1,174,356.04