Finding the Third Proportional to 1,276,639 and 1,890,310

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276,639 : 1,890,310 = 1,890,310 : x
2. Step 2: Convert to fraction form
   1,276,639/1,890,310 = 1,890,310/x
3. Step 3: Cross multiply
   1,276,639x = 1,890,310 × 1,890,310
4. Step 4: Simplify right side
   1,276,639x = 3,573,271,896,100
5. Step 5: Solve for x
   x = 3,573,271,896,100/1,276,639
6. Step 6: Final answer
   x = 2,798,968.15