Finding the Third Proportional to 86,430 and 141,131

Step by Step Solution

1. Step 1: Write the proportion equation
   86,430 : 141,131 = 141,131 : x
2. Step 2: Convert to fraction form
   86,430/141,131 = 141,131/x
3. Step 3: Cross multiply
   86,430x = 141,131 × 141,131
4. Step 4: Simplify right side
   86,430x = 19,917,959,161
5. Step 5: Solve for x
   x = 19,917,959,161/86,430
6. Step 6: Final answer
   x = 230,451.92