Finding the Third Proportional to 810,903 and 1,243,830

Step by Step Solution

1. Step 1: Write the proportion equation
   810,903 : 1,243,830 = 1,243,830 : x
2. Step 2: Convert to fraction form
   810,903/1,243,830 = 1,243,830/x
3. Step 3: Cross multiply
   810,903x = 1,243,830 × 1,243,830
4. Step 4: Simplify right side
   810,903x = 1,547,113,068,900
5. Step 5: Solve for x
   x = 1,547,113,068,900/810,903
6. Step 6: Final answer
   x = 1,907,889.19