Finding the Third Proportional to 42,978.75 and 64,548.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,978.75 : 64,548.75 = 64,548.75 : x
2. Step 2: Convert to fraction form
   42,978.75/64,548.75 = 64,548.75/x
3. Step 3: Cross multiply
   42,978.75x = 64,548.75 × 64,548.75
4. Step 4: Simplify right side
   42,978.75x = 4,166,541,126.56
5. Step 5: Solve for x
   x = 4,166,541,126.56/42,978.75
6. Step 6: Final answer
   x = 96,944.21