Finding the Third Proportional to 231,945 and 358,393.50

Step by Step Solution

1. Step 1: Write the proportion equation
   231,945 : 358,393.50 = 358,393.50 : x
2. Step 2: Convert to fraction form
   231,945/358,393.50 = 358,393.50/x
3. Step 3: Cross multiply
   231,945x = 358,393.50 × 358,393.50
4. Step 4: Simplify right side
   231,945x = 128,445,900,842.25
5. Step 5: Solve for x
   x = 128,445,900,842.25/231,945
6. Step 6: Final answer
   x = 553,777.41