Finding the Third Proportional to 287,884,962 and 626,884,164

Step by Step Solution

1. Step 1: Write the proportion equation
   287,884,962 : 626,884,164 = 626,884,164 : x
2. Step 2: Convert to fraction form
   287,884,962/626,884,164 = 626,884,164/x
3. Step 3: Cross multiply
   287,884,962x = 626,884,164 × 626,884,164
4. Step 4: Simplify right side
   287,884,962x = 392,983,755,073,978,880
5. Step 5: Solve for x
   x = 392,983,755,073,978,880/287,884,962
6. Step 6: Final answer
   x = 1,365,072,188.36