Finding the Third Proportional to 141,186 and 310,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,186 : 310,789.50 = 310,789.50 : x
2. Step 2: Convert to fraction form
   141,186/310,789.50 = 310,789.50/x
3. Step 3: Cross multiply
   141,186x = 310,789.50 × 310,789.50
4. Step 4: Simplify right side
   141,186x = 96,590,113,310.25
5. Step 5: Solve for x
   x = 96,590,113,310.25/141,186
6. Step 6: Final answer
   x = 684,133.79