Finding the Third Proportional to 69,380 and 99,142

Step by Step Solution

1. Step 1: Write the proportion equation
   69,380 : 99,142 = 99,142 : x
2. Step 2: Convert to fraction form
   69,380/99,142 = 99,142/x
3. Step 3: Cross multiply
   69,380x = 99,142 × 99,142
4. Step 4: Simplify right side
   69,380x = 9,829,136,164
5. Step 5: Solve for x
   x = 9,829,136,164/69,380
6. Step 6: Final answer
   x = 141,671.03