Finding the Third Proportional to 1,309,672 and 1,969,380

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,672 : 1,969,380 = 1,969,380 : x
2. Step 2: Convert to fraction form
   1,309,672/1,969,380 = 1,969,380/x
3. Step 3: Cross multiply
   1,309,672x = 1,969,380 × 1,969,380
4. Step 4: Simplify right side
   1,309,672x = 3,878,457,584,400
5. Step 5: Solve for x
   x = 3,878,457,584,400/1,309,672
6. Step 6: Final answer
   x = 2,961,396.12