Finding the Third Proportional to 183,189 and 398,638.50

Step by Step Solution

1. Step 1: Write the proportion equation
   183,189 : 398,638.50 = 398,638.50 : x
2. Step 2: Convert to fraction form
   183,189/398,638.50 = 398,638.50/x
3. Step 3: Cross multiply
   183,189x = 398,638.50 × 398,638.50
4. Step 4: Simplify right side
   183,189x = 158,912,653,682.25
5. Step 5: Solve for x
   x = 158,912,653,682.25/183,189
6. Step 6: Final answer
   x = 867,479.24