Finding the Third Proportional to 761,642 and 1,672,724

Step by Step Solution

1. Step 1: Write the proportion equation
   761,642 : 1,672,724 = 1,672,724 : x
2. Step 2: Convert to fraction form
   761,642/1,672,724 = 1,672,724/x
3. Step 3: Cross multiply
   761,642x = 1,672,724 × 1,672,724
4. Step 4: Simplify right side
   761,642x = 2,798,005,580,176
5. Step 5: Solve for x
   x = 2,798,005,580,176/761,642
6. Step 6: Final answer
   x = 3,673,649.27