Finding the Third Proportional to 403,076.25 and 869,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,076.25 : 869,089.50 = 869,089.50 : x
2. Step 2: Convert to fraction form
   403,076.25/869,089.50 = 869,089.50/x
3. Step 3: Cross multiply
   403,076.25x = 869,089.50 × 869,089.50
4. Step 4: Simplify right side
   403,076.25x = 755,316,559,010.25
5. Step 5: Solve for x
   x = 755,316,559,010.25/403,076.25
6. Step 6: Final answer
   x = 1,873,880.09