Finding the Third Proportional to 642,964 and 1,374,500

Step by Step Solution

1. Step 1: Write the proportion equation
   642,964 : 1,374,500 = 1,374,500 : x
2. Step 2: Convert to fraction form
   642,964/1,374,500 = 1,374,500/x
3. Step 3: Cross multiply
   642,964x = 1,374,500 × 1,374,500
4. Step 4: Simplify right side
   642,964x = 1,889,250,250,000
5. Step 5: Solve for x
   x = 1,889,250,250,000/642,964
6. Step 6: Final answer
   x = 2,938,345.30