Finding the Third Proportional to 102,789 and 117,551.25

Step by Step Solution

1. Step 1: Write the proportion equation
   102,789 : 117,551.25 = 117,551.25 : x
2. Step 2: Convert to fraction form
   102,789/117,551.25 = 117,551.25/x
3. Step 3: Cross multiply
   102,789x = 117,551.25 × 117,551.25
4. Step 4: Simplify right side
   102,789x = 13,818,296,376.56
5. Step 5: Solve for x
   x = 13,818,296,376.56/102,789
6. Step 6: Final answer
   x = 134,433.61