Finding the Third Proportional to 131,154 and 286,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,154 : 286,015.50 = 286,015.50 : x
2. Step 2: Convert to fraction form
   131,154/286,015.50 = 286,015.50/x
3. Step 3: Cross multiply
   131,154x = 286,015.50 × 286,015.50
4. Step 4: Simplify right side
   131,154x = 81,804,866,240.25
5. Step 5: Solve for x
   x = 81,804,866,240.25/131,154
6. Step 6: Final answer
   x = 623,731.39