Finding the Third Proportional to 721,596 and 1,558,819

Step by Step Solution

1. Step 1: Write the proportion equation
   721,596 : 1,558,819 = 1,558,819 : x
2. Step 2: Convert to fraction form
   721,596/1,558,819 = 1,558,819/x
3. Step 3: Cross multiply
   721,596x = 1,558,819 × 1,558,819
4. Step 4: Simplify right side
   721,596x = 2,429,916,674,761
5. Step 5: Solve for x
   x = 2,429,916,674,761/721,596
6. Step 6: Final answer
   x = 3,367,419.82