Finding the Third Proportional to 538,086 and 808,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   538,086 : 808,405.50 = 808,405.50 : x
2. Step 2: Convert to fraction form
   538,086/808,405.50 = 808,405.50/x
3. Step 3: Cross multiply
   538,086x = 808,405.50 × 808,405.50
4. Step 4: Simplify right side
   538,086x = 653,519,452,430.25
5. Step 5: Solve for x
   x = 653,519,452,430.25/538,086
6. Step 6: Final answer
   x = 1,214,526.03