Finding the Third Proportional to 64,937.25 and 139,567.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,937.25 : 139,567.50 = 139,567.50 : x
2. Step 2: Convert to fraction form
   64,937.25/139,567.50 = 139,567.50/x
3. Step 3: Cross multiply
   64,937.25x = 139,567.50 × 139,567.50
4. Step 4: Simplify right side
   64,937.25x = 19,479,087,056.25
5. Step 5: Solve for x
   x = 19,479,087,056.25/64,937.25
6. Step 6: Final answer
   x = 299,967.85