Finding the Third Proportional to 58,061 and 86,866

Step by Step Solution

1. Step 1: Write the proportion equation
   58,061 : 86,866 = 86,866 : x
2. Step 2: Convert to fraction form
   58,061/86,866 = 86,866/x
3. Step 3: Cross multiply
   58,061x = 86,866 × 86,866
4. Step 4: Simplify right side
   58,061x = 7,545,701,956
5. Step 5: Solve for x
   x = 7,545,701,956/58,061
6. Step 6: Final answer
   x = 129,961.63