Finding the Third Proportional to 42,312 and 90,616

Step by Step Solution

1. Step 1: Write the proportion equation
   42,312 : 90,616 = 90,616 : x
2. Step 2: Convert to fraction form
   42,312/90,616 = 90,616/x
3. Step 3: Cross multiply
   42,312x = 90,616 × 90,616
4. Step 4: Simplify right side
   42,312x = 8,211,259,456
5. Step 5: Solve for x
   x = 8,211,259,456/42,312
6. Step 6: Final answer
   x = 194,064.56