Finding the Third Proportional to 42,385.50 and 64,123.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,385.50 : 64,123.88 = 64,123.88 : x
2. Step 2: Convert to fraction form
   42,385.50/64,123.88 = 64,123.88/x
3. Step 3: Cross multiply
   42,385.50x = 64,123.88 × 64,123.88
4. Step 4: Simplify right side
   42,385.50x = 4,111,871,345.02
5. Step 5: Solve for x
   x = 4,111,871,345.02/42,385.50
6. Step 6: Final answer
   x = 97,011.27