Finding the Third Proportional to 19,490.38 and 42,098.88

Step by Step Solution

1. Step 1: Write the proportion equation
   19,490.38 : 42,098.88 = 42,098.88 : x
2. Step 2: Convert to fraction form
   19,490.38/42,098.88 = 42,098.88/x
3. Step 3: Cross multiply
   19,490.38x = 42,098.88 × 42,098.88
4. Step 4: Simplify right side
   19,490.38x = 1,772,315,276.27
5. Step 5: Solve for x
   x = 1,772,315,276.27/19,490.38
6. Step 6: Final answer
   x = 90,932.85