Finding the Third Proportional to 42,221.25 and 90,342

Step by Step Solution

1. Step 1: Write the proportion equation
   42,221.25 : 90,342 = 90,342 : x
2. Step 2: Convert to fraction form
   42,221.25/90,342 = 90,342/x
3. Step 3: Cross multiply
   42,221.25x = 90,342 × 90,342
4. Step 4: Simplify right side
   42,221.25x = 8,161,676,964
5. Step 5: Solve for x
   x = 8,161,676,964/42,221.25
6. Step 6: Final answer
   x = 193,307.33