Finding the Third Proportional to 7,776 and 10,432.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,776 : 10,432.50 = 10,432.50 : x
2. Step 2: Convert to fraction form
   7,776/10,432.50 = 10,432.50/x
3. Step 3: Cross multiply
   7,776x = 10,432.50 × 10,432.50
4. Step 4: Simplify right side
   7,776x = 108,837,056.25
5. Step 5: Solve for x
   x = 108,837,056.25/7,776
6. Step 6: Final answer
   x = 13,996.54