Finding the Third Proportional to 36,900.50 and 51,780

Step by Step Solution

1. Step 1: Write the proportion equation
   36,900.50 : 51,780 = 51,780 : x
2. Step 2: Convert to fraction form
   36,900.50/51,780 = 51,780/x
3. Step 3: Cross multiply
   36,900.50x = 51,780 × 51,780
4. Step 4: Simplify right side
   36,900.50x = 2,681,168,400
5. Step 5: Solve for x
   x = 2,681,168,400/36,900.50
6. Step 6: Final answer
   x = 72,659.41