Finding the Third Proportional to 26,879.63 and 42,703.31

Step by Step Solution

1. Step 1: Write the proportion equation
   26,879.63 : 42,703.31 = 42,703.31 : x
2. Step 2: Convert to fraction form
   26,879.63/42,703.31 = 42,703.31/x
3. Step 3: Cross multiply
   26,879.63x = 42,703.31 × 42,703.31
4. Step 4: Simplify right side
   26,879.63x = 1,823,572,898.47
5. Step 5: Solve for x
   x = 1,823,572,898.47/26,879.63
6. Step 6: Final answer
   x = 67,842.20