Finding the Third Proportional to 445,359 and 688,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   445,359 : 688,045.50 = 688,045.50 : x
2. Step 2: Convert to fraction form
   445,359/688,045.50 = 688,045.50/x
3. Step 3: Cross multiply
   445,359x = 688,045.50 × 688,045.50
4. Step 4: Simplify right side
   445,359x = 473,406,610,070.25
5. Step 5: Solve for x
   x = 473,406,610,070.25/445,359
6. Step 6: Final answer
   x = 1,062,977.53