Finding the Third Proportional to 316,081.50 and 698,637

Step by Step Solution

1. Step 1: Write the proportion equation
   316,081.50 : 698,637 = 698,637 : x
2. Step 2: Convert to fraction form
   316,081.50/698,637 = 698,637/x
3. Step 3: Cross multiply
   316,081.50x = 698,637 × 698,637
4. Step 4: Simplify right side
   316,081.50x = 488,093,657,769
5. Step 5: Solve for x
   x = 488,093,657,769/316,081.50
6. Step 6: Final answer
   x = 1,544,201.92