Finding the Third Proportional to 52,860.50 and 72,486.75

Step by Step Solution

1. Step 1: Write the proportion equation
   52,860.50 : 72,486.75 = 72,486.75 : x
2. Step 2: Convert to fraction form
   52,860.50/72,486.75 = 72,486.75/x
3. Step 3: Cross multiply
   52,860.50x = 72,486.75 × 72,486.75
4. Step 4: Simplify right side
   52,860.50x = 5,254,328,925.56
5. Step 5: Solve for x
   x = 5,254,328,925.56/52,860.50
6. Step 6: Final answer
   x = 99,399.91