Finding the Third Proportional to 1,261,316 and 1,890,129

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261,316 : 1,890,129 = 1,890,129 : x
2. Step 2: Convert to fraction form
   1,261,316/1,890,129 = 1,890,129/x
3. Step 3: Cross multiply
   1,261,316x = 1,890,129 × 1,890,129
4. Step 4: Simplify right side
   1,261,316x = 3,572,587,636,641
5. Step 5: Solve for x
   x = 3,572,587,636,641/1,261,316
6. Step 6: Final answer
   x = 2,832,428.70