Finding the Third Proportional to 688,064 and 1,042,464

Step by Step Solution

1. Step 1: Write the proportion equation
   688,064 : 1,042,464 = 1,042,464 : x
2. Step 2: Convert to fraction form
   688,064/1,042,464 = 1,042,464/x
3. Step 3: Cross multiply
   688,064x = 1,042,464 × 1,042,464
4. Step 4: Simplify right side
   688,064x = 1,086,731,191,296
5. Step 5: Solve for x
   x = 1,086,731,191,296/688,064
6. Step 6: Final answer
   x = 1,579,404.23