Finding the Third Proportional to 42,108 and 90,784

Step by Step Solution

1. Step 1: Write the proportion equation
   42,108 : 90,784 = 90,784 : x
2. Step 2: Convert to fraction form
   42,108/90,784 = 90,784/x
3. Step 3: Cross multiply
   42,108x = 90,784 × 90,784
4. Step 4: Simplify right side
   42,108x = 8,241,734,656
5. Step 5: Solve for x
   x = 8,241,734,656/42,108
6. Step 6: Final answer
   x = 195,728.48