Finding the Third Proportional to 607,678.50 and 1,309,557

Step by Step Solution

1. Step 1: Write the proportion equation
   607,678.50 : 1,309,557 = 1,309,557 : x
2. Step 2: Convert to fraction form
   607,678.50/1,309,557 = 1,309,557/x
3. Step 3: Cross multiply
   607,678.50x = 1,309,557 × 1,309,557
4. Step 4: Simplify right side
   607,678.50x = 1,714,939,536,249
5. Step 5: Solve for x
   x = 1,714,939,536,249/607,678.50
6. Step 6: Final answer
   x = 2,822,116.52