Finding the Third Proportional to 42,190.88 and 91,779.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,190.88 : 91,779.75 = 91,779.75 : x
2. Step 2: Convert to fraction form
   42,190.88/91,779.75 = 91,779.75/x
3. Step 3: Cross multiply
   42,190.88x = 91,779.75 × 91,779.75
4. Step 4: Simplify right side
   42,190.88x = 8,423,522,510.06
5. Step 5: Solve for x
   x = 8,423,522,510.06/42,190.88
6. Step 6: Final answer
   x = 199,652.71