Finding the Third Proportional to 84,663 and 123,990.75

Step by Step Solution

1. Step 1: Write the proportion equation
   84,663 : 123,990.75 = 123,990.75 : x
2. Step 2: Convert to fraction form
   84,663/123,990.75 = 123,990.75/x
3. Step 3: Cross multiply
   84,663x = 123,990.75 × 123,990.75
4. Step 4: Simplify right side
   84,663x = 15,373,706,085.56
5. Step 5: Solve for x
   x = 15,373,706,085.56/84,663
6. Step 6: Final answer
   x = 181,587.07