Finding the Third Proportional to 139,387.50 and 296,757

Step by Step Solution

1. Step 1: Write the proportion equation
   139,387.50 : 296,757 = 296,757 : x
2. Step 2: Convert to fraction form
   139,387.50/296,757 = 296,757/x
3. Step 3: Cross multiply
   139,387.50x = 296,757 × 296,757
4. Step 4: Simplify right side
   139,387.50x = 88,064,717,049
5. Step 5: Solve for x
   x = 88,064,717,049/139,387.50
6. Step 6: Final answer
   x = 631,797.81