Finding the Third Proportional to 64,384.88 and 139,488.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,384.88 : 139,488.75 = 139,488.75 : x
2. Step 2: Convert to fraction form
   64,384.88/139,488.75 = 139,488.75/x
3. Step 3: Cross multiply
   64,384.88x = 139,488.75 × 139,488.75
4. Step 4: Simplify right side
   64,384.88x = 19,457,111,376.56
5. Step 5: Solve for x
   x = 19,457,111,376.56/64,384.88
6. Step 6: Final answer
   x = 302,200.03