Finding the Third Proportional to 42,243.19 and 79,165.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,243.19 : 79,165.69 = 79,165.69 : x
2. Step 2: Convert to fraction form
   42,243.19/79,165.69 = 79,165.69/x
3. Step 3: Cross multiply
   42,243.19x = 79,165.69 × 79,165.69
4. Step 4: Simplify right side
   42,243.19x = 6,267,206,077.35
5. Step 5: Solve for x
   x = 6,267,206,077.35/42,243.19
6. Step 6: Final answer
   x = 148,360.16