Finding the Third Proportional to 688,696,854.75 and 1,406,300,503.50

Step by Step Solution

1. Step 1: Write the proportion equation
   688,696,854.75 : 1,406,300,503.50 = 1,406,300,503.50 : x
2. Step 2: Convert to fraction form
   688,696,854.75/1,406,300,503.50 = 1,406,300,503.50/x
3. Step 3: Cross multiply
   688,696,854.75x = 1,406,300,503.50 × 1,406,300,503.50
4. Step 4: Simplify right side
   688,696,854.75x = 1,977,681,106,144,353,536
5. Step 5: Solve for x
   x = 1,977,681,106,144,353,536/688,696,854.75
6. Step 6: Final answer
   x = 2,871,627,904.94