Finding the Third Proportional to 42,143.63 and 89,474.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,143.63 : 89,474.63 = 89,474.63 : x
2. Step 2: Convert to fraction form
   42,143.63/89,474.63 = 89,474.63/x
3. Step 3: Cross multiply
   42,143.63x = 89,474.63 × 89,474.63
4. Step 4: Simplify right side
   42,143.63x = 8,005,708,518.89
5. Step 5: Solve for x
   x = 8,005,708,518.89/42,143.63
6. Step 6: Final answer
   x = 189,962.50