Finding the Third Proportional to 910,698 and 1,978,857

Step by Step Solution

1. Step 1: Write the proportion equation
   910,698 : 1,978,857 = 1,978,857 : x
2. Step 2: Convert to fraction form
   910,698/1,978,857 = 1,978,857/x
3. Step 3: Cross multiply
   910,698x = 1,978,857 × 1,978,857
4. Step 4: Simplify right side
   910,698x = 3,915,875,026,449
5. Step 5: Solve for x
   x = 3,915,875,026,449/910,698
6. Step 6: Final answer
   x = 4,299,861.23