Finding the Third Proportional to 19,635.86 and 42,385.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,635.86 : 42,385.15 = 42,385.15 : x
2. Step 2: Convert to fraction form
   19,635.86/42,385.15 = 42,385.15/x
3. Step 3: Cross multiply
   19,635.86x = 42,385.15 × 42,385.15
4. Step 4: Simplify right side
   19,635.86x = 1,796,500,808.07
5. Step 5: Solve for x
   x = 1,796,500,808.07/19,635.86
6. Step 6: Final answer
   x = 91,490.83