Finding the Third Proportional to 432,009 and 573,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   432,009 : 573,256.50 = 573,256.50 : x
2. Step 2: Convert to fraction form
   432,009/573,256.50 = 573,256.50/x
3. Step 3: Cross multiply
   432,009x = 573,256.50 × 573,256.50
4. Step 4: Simplify right side
   432,009x = 328,623,014,792.25
5. Step 5: Solve for x
   x = 328,623,014,792.25/432,009
6. Step 6: Final answer
   x = 760,685.58