Finding the Third Proportional to 149,058 and 221,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,058 : 221,557.50 = 221,557.50 : x
2. Step 2: Convert to fraction form
   149,058/221,557.50 = 221,557.50/x
3. Step 3: Cross multiply
   149,058x = 221,557.50 × 221,557.50
4. Step 4: Simplify right side
   149,058x = 49,087,725,806.25
5. Step 5: Solve for x
   x = 49,087,725,806.25/149,058
6. Step 6: Final answer
   x = 329,319.63