Finding the Third Proportional to 2,602,479 and 5,639,318

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602,479 : 5,639,318 = 5,639,318 : x
2. Step 2: Convert to fraction form
   2,602,479/5,639,318 = 5,639,318/x
3. Step 3: Cross multiply
   2,602,479x = 5,639,318 × 5,639,318
4. Step 4: Simplify right side
   2,602,479x = 31,801,907,505,124
5. Step 5: Solve for x
   x = 31,801,907,505,124/2,602,479
6. Step 6: Final answer
   x = 12,219,851.73