Finding the Third Proportional to 1,428,207 and 1,958,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,207 : 1,958,404.50 = 1,958,404.50 : x
2. Step 2: Convert to fraction form
   1,428,207/1,958,404.50 = 1,958,404.50/x
3. Step 3: Cross multiply
   1,428,207x = 1,958,404.50 × 1,958,404.50
4. Step 4: Simplify right side
   1,428,207x = 3,835,348,185,620.25
5. Step 5: Solve for x
   x = 3,835,348,185,620.25/1,428,207
6. Step 6: Final answer
   x = 2,685,428.78