Finding the Third Proportional to 230,784.19 and 338,688

Step by Step Solution

1. Step 1: Write the proportion equation
   230,784.19 : 338,688 = 338,688 : x
2. Step 2: Convert to fraction form
   230,784.19/338,688 = 338,688/x
3. Step 3: Cross multiply
   230,784.19x = 338,688 × 338,688
4. Step 4: Simplify right side
   230,784.19x = 114,709,561,344
5. Step 5: Solve for x
   x = 114,709,561,344/230,784.19
6. Step 6: Final answer
   x = 497,042.55