Finding the Third Proportional to 248,311 and 384,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,311 : 384,411.50 = 384,411.50 : x
2. Step 2: Convert to fraction form
   248,311/384,411.50 = 384,411.50/x
3. Step 3: Cross multiply
   248,311x = 384,411.50 × 384,411.50
4. Step 4: Simplify right side
   248,311x = 147,772,201,332.25
5. Step 5: Solve for x
   x = 147,772,201,332.25/248,311
6. Step 6: Final answer
   x = 595,109.36