Finding the Third Proportional to 140,012 and 207,820

Step by Step Solution

1. Step 1: Write the proportion equation
   140,012 : 207,820 = 207,820 : x
2. Step 2: Convert to fraction form
   140,012/207,820 = 207,820/x
3. Step 3: Cross multiply
   140,012x = 207,820 × 207,820
4. Step 4: Simplify right side
   140,012x = 43,189,152,400
5. Step 5: Solve for x
   x = 43,189,152,400/140,012
6. Step 6: Final answer
   x = 308,467.51