Finding the Third Proportional to 42,618.38 and 65,224.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,618.38 : 65,224.69 = 65,224.69 : x
2. Step 2: Convert to fraction form
   42,618.38/65,224.69 = 65,224.69/x
3. Step 3: Cross multiply
   42,618.38x = 65,224.69 × 65,224.69
4. Step 4: Simplify right side
   42,618.38x = 4,254,259,859.47
5. Step 5: Solve for x
   x = 4,254,259,859.47/42,618.38
6. Step 6: Final answer
   x = 99,822.20