Finding the Third Proportional to 215,622 and 308,754

Step by Step Solution

1. Step 1: Write the proportion equation
   215,622 : 308,754 = 308,754 : x
2. Step 2: Convert to fraction form
   215,622/308,754 = 308,754/x
3. Step 3: Cross multiply
   215,622x = 308,754 × 308,754
4. Step 4: Simplify right side
   215,622x = 95,329,032,516
5. Step 5: Solve for x
   x = 95,329,032,516/215,622
6. Step 6: Final answer
   x = 442,111.81