Finding the Third Proportional to 684,490 and 1,064,070

Step by Step Solution

1. Step 1: Write the proportion equation
   684,490 : 1,064,070 = 1,064,070 : x
2. Step 2: Convert to fraction form
   684,490/1,064,070 = 1,064,070/x
3. Step 3: Cross multiply
   684,490x = 1,064,070 × 1,064,070
4. Step 4: Simplify right side
   684,490x = 1,132,244,964,900
5. Step 5: Solve for x
   x = 1,132,244,964,900/684,490
6. Step 6: Final answer
   x = 1,654,143.91