Finding the Third Proportional to 631,209 and 977,836.50

Step by Step Solution

1. Step 1: Write the proportion equation
   631,209 : 977,836.50 = 977,836.50 : x
2. Step 2: Convert to fraction form
   631,209/977,836.50 = 977,836.50/x
3. Step 3: Cross multiply
   631,209x = 977,836.50 × 977,836.50
4. Step 4: Simplify right side
   631,209x = 956,164,220,732.25
5. Step 5: Solve for x
   x = 956,164,220,732.25/631,209
6. Step 6: Final answer
   x = 1,514,813.99