Finding the Third Proportional to 42,220 and 61,156

Step by Step Solution

1. Step 1: Write the proportion equation
   42,220 : 61,156 = 61,156 : x
2. Step 2: Convert to fraction form
   42,220/61,156 = 61,156/x
3. Step 3: Cross multiply
   42,220x = 61,156 × 61,156
4. Step 4: Simplify right side
   42,220x = 3,740,056,336
5. Step 5: Solve for x
   x = 3,740,056,336/42,220
6. Step 6: Final answer
   x = 88,584.94