Finding the Third Proportional to 42,366 and 90,210

Step by Step Solution

1. Step 1: Write the proportion equation
   42,366 : 90,210 = 90,210 : x
2. Step 2: Convert to fraction form
   42,366/90,210 = 90,210/x
3. Step 3: Cross multiply
   42,366x = 90,210 × 90,210
4. Step 4: Simplify right side
   42,366x = 8,137,844,100
5. Step 5: Solve for x
   x = 8,137,844,100/42,366
6. Step 6: Final answer
   x = 192,084.32