Finding the Third Proportional to 607,640 and 1,308,769

Step by Step Solution

1. Step 1: Write the proportion equation
   607,640 : 1,308,769 = 1,308,769 : x
2. Step 2: Convert to fraction form
   607,640/1,308,769 = 1,308,769/x
3. Step 3: Cross multiply
   607,640x = 1,308,769 × 1,308,769
4. Step 4: Simplify right side
   607,640x = 1,712,876,295,361
5. Step 5: Solve for x
   x = 1,712,876,295,361/607,640
6. Step 6: Final answer
   x = 2,818,899.83