Finding the Third Proportional to 1,385,280 and 2,072,340

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385,280 : 2,072,340 = 2,072,340 : x
2. Step 2: Convert to fraction form
   1,385,280/2,072,340 = 2,072,340/x
3. Step 3: Cross multiply
   1,385,280x = 2,072,340 × 2,072,340
4. Step 4: Simplify right side
   1,385,280x = 4,294,593,075,600
5. Step 5: Solve for x
   x = 4,294,593,075,600/1,385,280
6. Step 6: Final answer
   x = 3,100,162.48