Finding the Third Proportional to 79,431 and 117,298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,431 : 117,298.50 = 117,298.50 : x
2. Step 2: Convert to fraction form
   79,431/117,298.50 = 117,298.50/x
3. Step 3: Cross multiply
   79,431x = 117,298.50 × 117,298.50
4. Step 4: Simplify right side
   79,431x = 13,758,938,102.25
5. Step 5: Solve for x
   x = 13,758,938,102.25/79,431
6. Step 6: Final answer
   x = 173,218.74