Finding the Third Proportional to 345,881 and 745,123

Step by Step Solution

1. Step 1: Write the proportion equation
   345,881 : 745,123 = 745,123 : x
2. Step 2: Convert to fraction form
   345,881/745,123 = 745,123/x
3. Step 3: Cross multiply
   345,881x = 745,123 × 745,123
4. Step 4: Simplify right side
   345,881x = 555,208,285,129
5. Step 5: Solve for x
   x = 555,208,285,129/345,881
6. Step 6: Final answer
   x = 1,605,200.30