Finding the Third Proportional to 260,355 and 570,646.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,355 : 570,646.50 = 570,646.50 : x
2. Step 2: Convert to fraction form
   260,355/570,646.50 = 570,646.50/x
3. Step 3: Cross multiply
   260,355x = 570,646.50 × 570,646.50
4. Step 4: Simplify right side
   260,355x = 325,637,427,962.25
5. Step 5: Solve for x
   x = 325,637,427,962.25/260,355
6. Step 6: Final answer
   x = 1,250,743.90