Finding the Third Proportional to 64,711.83 and 138,419.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,711.83 : 138,419.72 = 138,419.72 : x
2. Step 2: Convert to fraction form
   64,711.83/138,419.72 = 138,419.72/x
3. Step 3: Cross multiply
   64,711.83x = 138,419.72 × 138,419.72
4. Step 4: Simplify right side
   64,711.83x = 19,160,018,538.83
5. Step 5: Solve for x
   x = 19,160,018,538.83/64,711.83
6. Step 6: Final answer
   x = 296,082.17