Finding the Third Proportional to 191,630 and 403,123

Step by Step Solution

1. Step 1: Write the proportion equation
   191,630 : 403,123 = 403,123 : x
2. Step 2: Convert to fraction form
   191,630/403,123 = 403,123/x
3. Step 3: Cross multiply
   191,630x = 403,123 × 403,123
4. Step 4: Simplify right side
   191,630x = 162,508,153,129
5. Step 5: Solve for x
   x = 162,508,153,129/191,630
6. Step 6: Final answer
   x = 848,030.86