Finding the Third Proportional to 42,317.25 and 90,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,317.25 : 90,117.50 = 90,117.50 : x
2. Step 2: Convert to fraction form
   42,317.25/90,117.50 = 90,117.50/x
3. Step 3: Cross multiply
   42,317.25x = 90,117.50 × 90,117.50
4. Step 4: Simplify right side
   42,317.25x = 8,121,163,806.25
5. Step 5: Solve for x
   x = 8,121,163,806.25/42,317.25
6. Step 6: Final answer
   x = 191,911.43