Finding the Third Proportional to 777,664 and 1,609,308

Step by Step Solution

1. Step 1: Write the proportion equation
   777,664 : 1,609,308 = 1,609,308 : x
2. Step 2: Convert to fraction form
   777,664/1,609,308 = 1,609,308/x
3. Step 3: Cross multiply
   777,664x = 1,609,308 × 1,609,308
4. Step 4: Simplify right side
   777,664x = 2,589,872,238,864
5. Step 5: Solve for x
   x = 2,589,872,238,864/777,664
6. Step 6: Final answer
   x = 3,330,322.91