Finding the Third Proportional to 1,590,642 and 2,409,129

Step by Step Solution

1. Step 1: Write the proportion equation
   1,590,642 : 2,409,129 = 2,409,129 : x
2. Step 2: Convert to fraction form
   1,590,642/2,409,129 = 2,409,129/x
3. Step 3: Cross multiply
   1,590,642x = 2,409,129 × 2,409,129
4. Step 4: Simplify right side
   1,590,642x = 5,803,902,538,641
5. Step 5: Solve for x
   x = 5,803,902,538,641/1,590,642
6. Step 6: Final answer
   x = 3,648,779.89