Finding the Third Proportional to 1,255,440 and 1,611,960

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255,440 : 1,611,960 = 1,611,960 : x
2. Step 2: Convert to fraction form
   1,255,440/1,611,960 = 1,611,960/x
3. Step 3: Cross multiply
   1,255,440x = 1,611,960 × 1,611,960
4. Step 4: Simplify right side
   1,255,440x = 2,598,415,041,600
5. Step 5: Solve for x
   x = 2,598,415,041,600/1,255,440
6. Step 6: Final answer
   x = 2,069,724.59