Finding the Third Proportional to 42,864.19 and 89,722.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,864.19 : 89,722.69 = 89,722.69 : x
2. Step 2: Convert to fraction form
   42,864.19/89,722.69 = 89,722.69/x
3. Step 3: Cross multiply
   42,864.19x = 89,722.69 × 89,722.69
4. Step 4: Simplify right side
   42,864.19x = 8,050,160,652.22
5. Step 5: Solve for x
   x = 8,050,160,652.22/42,864.19
6. Step 6: Final answer
   x = 187,806.21