Finding the Third Proportional to 258,156 and 555,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,156 : 555,862.50 = 555,862.50 : x
2. Step 2: Convert to fraction form
   258,156/555,862.50 = 555,862.50/x
3. Step 3: Cross multiply
   258,156x = 555,862.50 × 555,862.50
4. Step 4: Simplify right side
   258,156x = 308,983,118,906.25
5. Step 5: Solve for x
   x = 308,983,118,906.25/258,156
6. Step 6: Final answer
   x = 1,196,885.29