Finding the Third Proportional to 28,666.31 and 42,156.88

Step by Step Solution

1. Step 1: Write the proportion equation
   28,666.31 : 42,156.88 = 42,156.88 : x
2. Step 2: Convert to fraction form
   28,666.31/42,156.88 = 42,156.88/x
3. Step 3: Cross multiply
   28,666.31x = 42,156.88 × 42,156.88
4. Step 4: Simplify right side
   28,666.31x = 1,777,202,109.77
5. Step 5: Solve for x
   x = 1,777,202,109.77/28,666.31
6. Step 6: Final answer
   x = 61,996.19