Finding the Third Proportional to 1,345,500 and 2,139,630

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345,500 : 2,139,630 = 2,139,630 : x
2. Step 2: Convert to fraction form
   1,345,500/2,139,630 = 2,139,630/x
3. Step 3: Cross multiply
   1,345,500x = 2,139,630 × 2,139,630
4. Step 4: Simplify right side
   1,345,500x = 4,578,016,536,900
5. Step 5: Solve for x
   x = 4,578,016,536,900/1,345,500
6. Step 6: Final answer
   x = 3,402,464.91