Finding the Third Proportional to 153,910 and 231,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,910 : 231,310.50 = 231,310.50 : x
2. Step 2: Convert to fraction form
   153,910/231,310.50 = 231,310.50/x
3. Step 3: Cross multiply
   153,910x = 231,310.50 × 231,310.50
4. Step 4: Simplify right side
   153,910x = 53,504,547,410.25
5. Step 5: Solve for x
   x = 53,504,547,410.25/153,910
6. Step 6: Final answer
   x = 347,635.29