Finding the Third Proportional to 56,143.13 and 86,538.38

Step by Step Solution

1. Step 1: Write the proportion equation
   56,143.13 : 86,538.38 = 86,538.38 : x
2. Step 2: Convert to fraction form
   56,143.13/86,538.38 = 86,538.38/x
3. Step 3: Cross multiply
   56,143.13x = 86,538.38 × 86,538.38
4. Step 4: Simplify right side
   56,143.13x = 7,488,890,347.64
5. Step 5: Solve for x
   x = 7,488,890,347.64/56,143.13
6. Step 6: Final answer
   x = 133,389.27