Finding the Third Proportional to 643,328 and 1,372,152

Step by Step Solution

1. Step 1: Write the proportion equation
   643,328 : 1,372,152 = 1,372,152 : x
2. Step 2: Convert to fraction form
   643,328/1,372,152 = 1,372,152/x
3. Step 3: Cross multiply
   643,328x = 1,372,152 × 1,372,152
4. Step 4: Simplify right side
   643,328x = 1,882,801,111,104
5. Step 5: Solve for x
   x = 1,882,801,111,104/643,328
6. Step 6: Final answer
   x = 2,926,658.11