Finding the Third Proportional to 90,680 and 140,064

Step by Step Solution

1. Step 1: Write the proportion equation
   90,680 : 140,064 = 140,064 : x
2. Step 2: Convert to fraction form
   90,680/140,064 = 140,064/x
3. Step 3: Cross multiply
   90,680x = 140,064 × 140,064
4. Step 4: Simplify right side
   90,680x = 19,617,924,096
5. Step 5: Solve for x
   x = 19,617,924,096/90,680
6. Step 6: Final answer
   x = 216,342.35