Finding the Third Proportional to 140,454 and 286,645.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,454 : 286,645.50 = 286,645.50 : x
2. Step 2: Convert to fraction form
   140,454/286,645.50 = 286,645.50/x
3. Step 3: Cross multiply
   140,454x = 286,645.50 × 286,645.50
4. Step 4: Simplify right side
   140,454x = 82,165,642,670.25
5. Step 5: Solve for x
   x = 82,165,642,670.25/140,454
6. Step 6: Final answer
   x = 585,000.38