Finding the Third Proportional to 358,038 and 772,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   358,038 : 772,123.50 = 772,123.50 : x
2. Step 2: Convert to fraction form
   358,038/772,123.50 = 772,123.50/x
3. Step 3: Cross multiply
   358,038x = 772,123.50 × 772,123.50
4. Step 4: Simplify right side
   358,038x = 596,174,699,252.25
5. Step 5: Solve for x
   x = 596,174,699,252.25/358,038
6. Step 6: Final answer
   x = 1,665,115.71