Finding the Third Proportional to 153,183 and 248,686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,183 : 248,686.50 = 248,686.50 : x
2. Step 2: Convert to fraction form
   153,183/248,686.50 = 248,686.50/x
3. Step 3: Cross multiply
   153,183x = 248,686.50 × 248,686.50
4. Step 4: Simplify right side
   153,183x = 61,844,975,282.25
5. Step 5: Solve for x
   x = 61,844,975,282.25/153,183
6. Step 6: Final answer
   x = 403,732.63