Finding the Third Proportional to 871,088 and 1,306,640

Step by Step Solution

1. Step 1: Write the proportion equation
   871,088 : 1,306,640 = 1,306,640 : x
2. Step 2: Convert to fraction form
   871,088/1,306,640 = 1,306,640/x
3. Step 3: Cross multiply
   871,088x = 1,306,640 × 1,306,640
4. Step 4: Simplify right side
   871,088x = 1,707,308,089,600
5. Step 5: Solve for x
   x = 1,707,308,089,600/871,088
6. Step 6: Final answer
   x = 1,959,972.00