Finding the Third Proportional to 168,538.50 and 372,123

Step by Step Solution

1. Step 1: Write the proportion equation
   168,538.50 : 372,123 = 372,123 : x
2. Step 2: Convert to fraction form
   168,538.50/372,123 = 372,123/x
3. Step 3: Cross multiply
   168,538.50x = 372,123 × 372,123
4. Step 4: Simplify right side
   168,538.50x = 138,475,527,129
5. Step 5: Solve for x
   x = 138,475,527,129/168,538.50
6. Step 6: Final answer
   x = 821,625.49