Finding the Third Proportional to 920,620 and 1,243,826

Step by Step Solution

1. Step 1: Write the proportion equation
   920,620 : 1,243,826 = 1,243,826 : x
2. Step 2: Convert to fraction form
   920,620/1,243,826 = 1,243,826/x
3. Step 3: Cross multiply
   920,620x = 1,243,826 × 1,243,826
4. Step 4: Simplify right side
   920,620x = 1,547,103,118,276
5. Step 5: Solve for x
   x = 1,547,103,118,276/920,620
6. Step 6: Final answer
   x = 1,680,501.31