Finding the Third Proportional to 191,739 and 300,123

Step by Step Solution

1. Step 1: Write the proportion equation
   191,739 : 300,123 = 300,123 : x
2. Step 2: Convert to fraction form
   191,739/300,123 = 300,123/x
3. Step 3: Cross multiply
   191,739x = 300,123 × 300,123
4. Step 4: Simplify right side
   191,739x = 90,073,815,129
5. Step 5: Solve for x
   x = 90,073,815,129/191,739
6. Step 6: Final answer
   x = 469,773.05