Finding the Third Proportional to 688,696,845.19 and 1,406,300,484.38

Step by Step Solution

1. Step 1: Write the proportion equation
   688,696,845.19 : 1,406,300,484.38 = 1,406,300,484.38 : x
2. Step 2: Convert to fraction form
   688,696,845.19/1,406,300,484.38 = 1,406,300,484.38/x
3. Step 3: Cross multiply
   688,696,845.19x = 1,406,300,484.38 × 1,406,300,484.38
4. Step 4: Simplify right side
   688,696,845.19x = 1,977,681,052,353,359,616
5. Step 5: Solve for x
   x = 1,977,681,052,353,359,616/688,696,845.19
6. Step 6: Final answer
   x = 2,871,627,866.71