Finding the Third Proportional to 406,906 and 619,835

Step by Step Solution

1. Step 1: Write the proportion equation
   406,906 : 619,835 = 619,835 : x
2. Step 2: Convert to fraction form
   406,906/619,835 = 619,835/x
3. Step 3: Cross multiply
   406,906x = 619,835 × 619,835
4. Step 4: Simplify right side
   406,906x = 384,195,427,225
5. Step 5: Solve for x
   x = 384,195,427,225/406,906
6. Step 6: Final answer
   x = 944,187.18