Finding the Third Proportional to 260,664 and 608,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,664 : 608,980.50 = 608,980.50 : x
2. Step 2: Convert to fraction form
   260,664/608,980.50 = 608,980.50/x
3. Step 3: Cross multiply
   260,664x = 608,980.50 × 608,980.50
4. Step 4: Simplify right side
   260,664x = 370,857,249,380.25
5. Step 5: Solve for x
   x = 370,857,249,380.25/260,664
6. Step 6: Final answer
   x = 1,422,740.58