Finding the Third Proportional to 1,272,645 and 1,780,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,645 : 1,780,181.50 = 1,780,181.50 : x
2. Step 2: Convert to fraction form
   1,272,645/1,780,181.50 = 1,780,181.50/x
3. Step 3: Cross multiply
   1,272,645x = 1,780,181.50 × 1,780,181.50
4. Step 4: Simplify right side
   1,272,645x = 3,169,046,172,942.25
5. Step 5: Solve for x
   x = 3,169,046,172,942.25/1,272,645
6. Step 6: Final answer
   x = 2,490,125.82