Finding the Third Proportional to 34,431.75 and 72,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   34,431.75 : 72,997.50 = 72,997.50 : x
2. Step 2: Convert to fraction form
   34,431.75/72,997.50 = 72,997.50/x
3. Step 3: Cross multiply
   34,431.75x = 72,997.50 × 72,997.50
4. Step 4: Simplify right side
   34,431.75x = 5,328,635,006.25
5. Step 5: Solve for x
   x = 5,328,635,006.25/34,431.75
6. Step 6: Final answer
   x = 154,759.34