Finding the Third Proportional to 762,778 and 1,645,508

Step by Step Solution

1. Step 1: Write the proportion equation
   762,778 : 1,645,508 = 1,645,508 : x
2. Step 2: Convert to fraction form
   762,778/1,645,508 = 1,645,508/x
3. Step 3: Cross multiply
   762,778x = 1,645,508 × 1,645,508
4. Step 4: Simplify right side
   762,778x = 2,707,696,578,064
5. Step 5: Solve for x
   x = 2,707,696,578,064/762,778
6. Step 6: Final answer
   x = 3,549,783.26