Finding the Third Proportional to 121,233 and 249,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,233 : 249,931.50 = 249,931.50 : x
2. Step 2: Convert to fraction form
   121,233/249,931.50 = 249,931.50/x
3. Step 3: Cross multiply
   121,233x = 249,931.50 × 249,931.50
4. Step 4: Simplify right side
   121,233x = 62,465,754,692.25
5. Step 5: Solve for x
   x = 62,465,754,692.25/121,233
6. Step 6: Final answer
   x = 515,253.72