Finding the Third Proportional to 140,526 and 249,858

Step by Step Solution

1. Step 1: Write the proportion equation
   140,526 : 249,858 = 249,858 : x
2. Step 2: Convert to fraction form
   140,526/249,858 = 249,858/x
3. Step 3: Cross multiply
   140,526x = 249,858 × 249,858
4. Step 4: Simplify right side
   140,526x = 62,429,020,164
5. Step 5: Solve for x
   x = 62,429,020,164/140,526
6. Step 6: Final answer
   x = 444,252.45