Finding the Third Proportional to 587,697 and 872,905.50

Step by Step Solution

1. Step 1: Write the proportion equation
   587,697 : 872,905.50 = 872,905.50 : x
2. Step 2: Convert to fraction form
   587,697/872,905.50 = 872,905.50/x
3. Step 3: Cross multiply
   587,697x = 872,905.50 × 872,905.50
4. Step 4: Simplify right side
   587,697x = 761,964,011,930.25
5. Step 5: Solve for x
   x = 761,964,011,930.25/587,697
6. Step 6: Final answer
   x = 1,296,525.27