Finding the Third Proportional to 380,598 and 813,672

Step by Step Solution

1. Step 1: Write the proportion equation
   380,598 : 813,672 = 813,672 : x
2. Step 2: Convert to fraction form
   380,598/813,672 = 813,672/x
3. Step 3: Cross multiply
   380,598x = 813,672 × 813,672
4. Step 4: Simplify right side
   380,598x = 662,062,123,584
5. Step 5: Solve for x
   x = 662,062,123,584/380,598
6. Step 6: Final answer
   x = 1,739,531.27