Finding the Third Proportional to 890,064 and 1,377,328

Step by Step Solution

1. Step 1: Write the proportion equation
   890,064 : 1,377,328 = 1,377,328 : x
2. Step 2: Convert to fraction form
   890,064/1,377,328 = 1,377,328/x
3. Step 3: Cross multiply
   890,064x = 1,377,328 × 1,377,328
4. Step 4: Simplify right side
   890,064x = 1,897,032,419,584
5. Step 5: Solve for x
   x = 1,897,032,419,584/890,064
6. Step 6: Final answer
   x = 2,131,343.84