Finding the Third Proportional to 542,003 and 805,146

Step by Step Solution

1. Step 1: Write the proportion equation
   542,003 : 805,146 = 805,146 : x
2. Step 2: Convert to fraction form
   542,003/805,146 = 805,146/x
3. Step 3: Cross multiply
   542,003x = 805,146 × 805,146
4. Step 4: Simplify right side
   542,003x = 648,260,081,316
5. Step 5: Solve for x
   x = 648,260,081,316/542,003
6. Step 6: Final answer
   x = 1,196,045.19