Finding the Third Proportional to 162,201 and 355,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,201 : 355,978.50 = 355,978.50 : x
2. Step 2: Convert to fraction form
   162,201/355,978.50 = 355,978.50/x
3. Step 3: Cross multiply
   162,201x = 355,978.50 × 355,978.50
4. Step 4: Simplify right side
   162,201x = 126,720,692,462.25
5. Step 5: Solve for x
   x = 126,720,692,462.25/162,201
6. Step 6: Final answer
   x = 781,257.16