Finding the Third Proportional to 597,811.50 and 1,290,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   597,811.50 : 1,290,061.50 = 1,290,061.50 : x
2. Step 2: Convert to fraction form
   597,811.50/1,290,061.50 = 1,290,061.50/x
3. Step 3: Cross multiply
   597,811.50x = 1,290,061.50 × 1,290,061.50
4. Step 4: Simplify right side
   597,811.50x = 1,664,258,673,782.25
5. Step 5: Solve for x
   x = 1,664,258,673,782.25/597,811.50
6. Step 6: Final answer
   x = 2,783,918.80