Finding the Third Proportional to 42,378.19 and 65,655.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,378.19 : 65,655.56 = 65,655.56 : x
2. Step 2: Convert to fraction form
   42,378.19/65,655.56 = 65,655.56/x
3. Step 3: Cross multiply
   42,378.19x = 65,655.56 × 65,655.56
4. Step 4: Simplify right side
   42,378.19x = 4,310,652,887.19
5. Step 5: Solve for x
   x = 4,310,652,887.19/42,378.19
6. Step 6: Final answer
   x = 101,718.67