Finding the Third Proportional to 551,008 and 851,078

Step by Step Solution

1. Step 1: Write the proportion equation
   551,008 : 851,078 = 851,078 : x
2. Step 2: Convert to fraction form
   551,008/851,078 = 851,078/x
3. Step 3: Cross multiply
   551,008x = 851,078 × 851,078
4. Step 4: Simplify right side
   551,008x = 724,333,762,084
5. Step 5: Solve for x
   x = 724,333,762,084/551,008
6. Step 6: Final answer
   x = 1,314,561.24