Finding the Third Proportional to 359,139 and 751,543.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,139 : 751,543.50 = 751,543.50 : x
2. Step 2: Convert to fraction form
   359,139/751,543.50 = 751,543.50/x
3. Step 3: Cross multiply
   359,139x = 751,543.50 × 751,543.50
4. Step 4: Simplify right side
   359,139x = 564,817,632,392.25
5. Step 5: Solve for x
   x = 564,817,632,392.25/359,139
6. Step 6: Final answer
   x = 1,572,699.24