Finding the Third Proportional to 90,116 and 129,806

Step by Step Solution

1. Step 1: Write the proportion equation
   90,116 : 129,806 = 129,806 : x
2. Step 2: Convert to fraction form
   90,116/129,806 = 129,806/x
3. Step 3: Cross multiply
   90,116x = 129,806 × 129,806
4. Step 4: Simplify right side
   90,116x = 16,849,597,636
5. Step 5: Solve for x
   x = 16,849,597,636/90,116
6. Step 6: Final answer
   x = 186,976.76