Finding the Third Proportional to 618,318 and 1,342,385

Step by Step Solution

1. Step 1: Write the proportion equation
   618,318 : 1,342,385 = 1,342,385 : x
2. Step 2: Convert to fraction form
   618,318/1,342,385 = 1,342,385/x
3. Step 3: Cross multiply
   618,318x = 1,342,385 × 1,342,385
4. Step 4: Simplify right side
   618,318x = 1,801,997,488,225
5. Step 5: Solve for x
   x = 1,801,997,488,225/618,318
6. Step 6: Final answer
   x = 2,914,353.92