Finding the Third Proportional to 79,722.50 and 123,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,722.50 : 123,434.50 = 123,434.50 : x
2. Step 2: Convert to fraction form
   79,722.50/123,434.50 = 123,434.50/x
3. Step 3: Cross multiply
   79,722.50x = 123,434.50 × 123,434.50
4. Step 4: Simplify right side
   79,722.50x = 15,236,075,790.25
5. Step 5: Solve for x
   x = 15,236,075,790.25/79,722.50
6. Step 6: Final answer
   x = 191,113.87