Finding the Third Proportional to 864,720 and 1,374,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   864,720 : 1,374,061.50 = 1,374,061.50 : x
2. Step 2: Convert to fraction form
   864,720/1,374,061.50 = 1,374,061.50/x
3. Step 3: Cross multiply
   864,720x = 1,374,061.50 × 1,374,061.50
4. Step 4: Simplify right side
   864,720x = 1,888,045,005,782.25
5. Step 5: Solve for x
   x = 1,888,045,005,782.25/864,720
6. Step 6: Final answer
   x = 2,183,417.76