Finding the Third Proportional to 28,776 and 42,132

Step by Step Solution

1. Step 1: Write the proportion equation
   28,776 : 42,132 = 42,132 : x
2. Step 2: Convert to fraction form
   28,776/42,132 = 42,132/x
3. Step 3: Cross multiply
   28,776x = 42,132 × 42,132
4. Step 4: Simplify right side
   28,776x = 1,775,105,424
5. Step 5: Solve for x
   x = 1,775,105,424/28,776
6. Step 6: Final answer
   x = 61,687.01