Finding the Third Proportional to 140,655 and 286,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,655 : 286,531.50 = 286,531.50 : x
2. Step 2: Convert to fraction form
   140,655/286,531.50 = 286,531.50/x
3. Step 3: Cross multiply
   140,655x = 286,531.50 × 286,531.50
4. Step 4: Simplify right side
   140,655x = 82,100,300,492.25
5. Step 5: Solve for x
   x = 82,100,300,492.25/140,655
6. Step 6: Final answer
   x = 583,699.84