Finding the Third Proportional to 64,528.50 and 138,396

Step by Step Solution

1. Step 1: Write the proportion equation
   64,528.50 : 138,396 = 138,396 : x
2. Step 2: Convert to fraction form
   64,528.50/138,396 = 138,396/x
3. Step 3: Cross multiply
   64,528.50x = 138,396 × 138,396
4. Step 4: Simplify right side
   64,528.50x = 19,153,452,816
5. Step 5: Solve for x
   x = 19,153,452,816/64,528.50
6. Step 6: Final answer
   x = 296,821.60