Finding the Third Proportional to 920,640 and 1,969,212

Step by Step Solution

1. Step 1: Write the proportion equation
   920,640 : 1,969,212 = 1,969,212 : x
2. Step 2: Convert to fraction form
   920,640/1,969,212 = 1,969,212/x
3. Step 3: Cross multiply
   920,640x = 1,969,212 × 1,969,212
4. Step 4: Simplify right side
   920,640x = 3,877,795,900,944
5. Step 5: Solve for x
   x = 3,877,795,900,944/920,640
6. Step 6: Final answer
   x = 4,212,065.41