Finding the Third Proportional to 7,890.75 and 12,328.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,890.75 : 12,328.88 = 12,328.88 : x
2. Step 2: Convert to fraction form
   7,890.75/12,328.88 = 12,328.88/x
3. Step 3: Cross multiply
   7,890.75x = 12,328.88 × 12,328.88
4. Step 4: Simplify right side
   7,890.75x = 152,001,158.77
5. Step 5: Solve for x
   x = 152,001,158.77/7,890.75
6. Step 6: Final answer
   x = 19,263.21