Finding the Third Proportional to 64,397.50 and 138,317

Step by Step Solution

1. Step 1: Write the proportion equation
   64,397.50 : 138,317 = 138,317 : x
2. Step 2: Convert to fraction form
   64,397.50/138,317 = 138,317/x
3. Step 3: Cross multiply
   64,397.50x = 138,317 × 138,317
4. Step 4: Simplify right side
   64,397.50x = 19,131,592,489
5. Step 5: Solve for x
   x = 19,131,592,489/64,397.50
6. Step 6: Final answer
   x = 297,085.95