Finding the Third Proportional to 90,912 and 141,576

Step by Step Solution

1. Step 1: Write the proportion equation
   90,912 : 141,576 = 141,576 : x
2. Step 2: Convert to fraction form
   90,912/141,576 = 141,576/x
3. Step 3: Cross multiply
   90,912x = 141,576 × 141,576
4. Step 4: Simplify right side
   90,912x = 20,043,763,776
5. Step 5: Solve for x
   x = 20,043,763,776/90,912
6. Step 6: Final answer
   x = 220,474.35