Finding the Third Proportional to 77,481.50 and 109,109

Step by Step Solution

1. Step 1: Write the proportion equation
   77,481.50 : 109,109 = 109,109 : x
2. Step 2: Convert to fraction form
   77,481.50/109,109 = 109,109/x
3. Step 3: Cross multiply
   77,481.50x = 109,109 × 109,109
4. Step 4: Simplify right side
   77,481.50x = 11,904,773,881
5. Step 5: Solve for x
   x = 11,904,773,881/77,481.50
6. Step 6: Final answer
   x = 153,646.66