Finding the Third Proportional to 910,414 and 1,406,688

Step by Step Solution

1. Step 1: Write the proportion equation
   910,414 : 1,406,688 = 1,406,688 : x
2. Step 2: Convert to fraction form
   910,414/1,406,688 = 1,406,688/x
3. Step 3: Cross multiply
   910,414x = 1,406,688 × 1,406,688
4. Step 4: Simplify right side
   910,414x = 1,978,771,129,344
5. Step 5: Solve for x
   x = 1,978,771,129,344/910,414
6. Step 6: Final answer
   x = 2,173,484.95