Finding the Third Proportional to 85,513.69 and 134,143.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,513.69 : 134,143.31 = 134,143.31 : x
2. Step 2: Convert to fraction form
   85,513.69/134,143.31 = 134,143.31/x
3. Step 3: Cross multiply
   85,513.69x = 134,143.31 × 134,143.31
4. Step 4: Simplify right side
   85,513.69x = 17,994,428,288.47
5. Step 5: Solve for x
   x = 17,994,428,288.47/85,513.69
6. Step 6: Final answer
   x = 210,427.46