Finding the Third Proportional to 542,001.50 and 805,145

Step by Step Solution

1. Step 1: Write the proportion equation
   542,001.50 : 805,145 = 805,145 : x
2. Step 2: Convert to fraction form
   542,001.50/805,145 = 805,145/x
3. Step 3: Cross multiply
   542,001.50x = 805,145 × 805,145
4. Step 4: Simplify right side
   542,001.50x = 648,258,471,025
5. Step 5: Solve for x
   x = 648,258,471,025/542,001.50
6. Step 6: Final answer
   x = 1,196,045.53