Finding the Third Proportional to 1,918,509 and 4,144,407

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918,509 : 4,144,407 = 4,144,407 : x
2. Step 2: Convert to fraction form
   1,918,509/4,144,407 = 4,144,407/x
3. Step 3: Cross multiply
   1,918,509x = 4,144,407 × 4,144,407
4. Step 4: Simplify right side
   1,918,509x = 17,176,109,381,649
5. Step 5: Solve for x
   x = 17,176,109,381,649/1,918,509
6. Step 6: Final answer
   x = 8,952,842.74