Finding the Third Proportional to 42,312 and 91,560

Step by Step Solution

1. Step 1: Write the proportion equation
   42,312 : 91,560 = 91,560 : x
2. Step 2: Convert to fraction form
   42,312/91,560 = 91,560/x
3. Step 3: Cross multiply
   42,312x = 91,560 × 91,560
4. Step 4: Simplify right side
   42,312x = 8,383,233,600
5. Step 5: Solve for x
   x = 8,383,233,600/42,312
6. Step 6: Final answer
   x = 198,128.98