Finding the Third Proportional to 878,624 and 1,918,358

Step by Step Solution

1. Step 1: Write the proportion equation
   878,624 : 1,918,358 = 1,918,358 : x
2. Step 2: Convert to fraction form
   878,624/1,918,358 = 1,918,358/x
3. Step 3: Cross multiply
   878,624x = 1,918,358 × 1,918,358
4. Step 4: Simplify right side
   878,624x = 3,680,097,416,164
5. Step 5: Solve for x
   x = 3,680,097,416,164/878,624
6. Step 6: Final answer
   x = 4,188,478.14