Finding the Third Proportional to 607,640 and 1,308,772

Step by Step Solution

1. Step 1: Write the proportion equation
   607,640 : 1,308,772 = 1,308,772 : x
2. Step 2: Convert to fraction form
   607,640/1,308,772 = 1,308,772/x
3. Step 3: Cross multiply
   607,640x = 1,308,772 × 1,308,772
4. Step 4: Simplify right side
   607,640x = 1,712,884,147,984
5. Step 5: Solve for x
   x = 1,712,884,147,984/607,640
6. Step 6: Final answer
   x = 2,818,912.76