Finding the Third Proportional to 42,077.81 and 90,842.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,077.81 : 90,842.91 = 90,842.91 : x
2. Step 2: Convert to fraction form
   42,077.81/90,842.91 = 90,842.91/x
3. Step 3: Cross multiply
   42,077.81x = 90,842.91 × 90,842.91
4. Step 4: Simplify right side
   42,077.81x = 8,252,433,615.95
5. Step 5: Solve for x
   x = 8,252,433,615.95/42,077.81
6. Step 6: Final answer
   x = 196,123.16