Finding the Third Proportional to 1,921,463 and 4,158,490

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921,463 : 4,158,490 = 4,158,490 : x
2. Step 2: Convert to fraction form
   1,921,463/4,158,490 = 4,158,490/x
3. Step 3: Cross multiply
   1,921,463x = 4,158,490 × 4,158,490
4. Step 4: Simplify right side
   1,921,463x = 17,293,039,080,100
5. Step 5: Solve for x
   x = 17,293,039,080,100/1,921,463
6. Step 6: Final answer
   x = 8,999,933.43