Finding the Third Proportional to 1,242,152 and 1,869,448

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242,152 : 1,869,448 = 1,869,448 : x
2. Step 2: Convert to fraction form
   1,242,152/1,869,448 = 1,869,448/x
3. Step 3: Cross multiply
   1,242,152x = 1,869,448 × 1,869,448
4. Step 4: Simplify right side
   1,242,152x = 3,494,835,824,704
5. Step 5: Solve for x
   x = 3,494,835,824,704/1,242,152
6. Step 6: Final answer
   x = 2,813,533.15