Finding the Third Proportional to 1,266,516 and 2,688,480

Step by Step Solution

1. Step 1: Write the proportion equation
   1,266,516 : 2,688,480 = 2,688,480 : x
2. Step 2: Convert to fraction form
   1,266,516/2,688,480 = 2,688,480/x
3. Step 3: Cross multiply
   1,266,516x = 2,688,480 × 2,688,480
4. Step 4: Simplify right side
   1,266,516x = 7,227,924,710,400
5. Step 5: Solve for x
   x = 7,227,924,710,400/1,266,516
6. Step 6: Final answer
   x = 5,706,935.18