Finding the Third Proportional to 286,632 and 607,432.50

Step by Step Solution

1. Step 1: Write the proportion equation
   286,632 : 607,432.50 = 607,432.50 : x
2. Step 2: Convert to fraction form
   286,632/607,432.50 = 607,432.50/x
3. Step 3: Cross multiply
   286,632x = 607,432.50 × 607,432.50
4. Step 4: Simplify right side
   286,632x = 368,974,242,056.25
5. Step 5: Solve for x
   x = 368,974,242,056.25/286,632
6. Step 6: Final answer
   x = 1,287,275.12