Finding the Third Proportional to 54,152 and 83,687

Step by Step Solution

1. Step 1: Write the proportion equation
   54,152 : 83,687 = 83,687 : x
2. Step 2: Convert to fraction form
   54,152/83,687 = 83,687/x
3. Step 3: Cross multiply
   54,152x = 83,687 × 83,687
4. Step 4: Simplify right side
   54,152x = 7,003,513,969
5. Step 5: Solve for x
   x = 7,003,513,969/54,152
6. Step 6: Final answer
   x = 129,330.66