Finding the Third Proportional to 645,414 and 1,402,770

Step by Step Solution

1. Step 1: Write the proportion equation
   645,414 : 1,402,770 = 1,402,770 : x
2. Step 2: Convert to fraction form
   645,414/1,402,770 = 1,402,770/x
3. Step 3: Cross multiply
   645,414x = 1,402,770 × 1,402,770
4. Step 4: Simplify right side
   645,414x = 1,967,763,672,900
5. Step 5: Solve for x
   x = 1,967,763,672,900/645,414
6. Step 6: Final answer
   x = 3,048,839.46