Finding the Third Proportional to 406,908 and 619,838

Step by Step Solution

1. Step 1: Write the proportion equation
   406,908 : 619,838 = 619,838 : x
2. Step 2: Convert to fraction form
   406,908/619,838 = 619,838/x
3. Step 3: Cross multiply
   406,908x = 619,838 × 619,838
4. Step 4: Simplify right side
   406,908x = 384,199,146,244
5. Step 5: Solve for x
   x = 384,199,146,244/406,908
6. Step 6: Final answer
   x = 944,191.68